Heavy truck center grille bar



FIG. 1 is a perspective view of a heavy truck center grille bar showing our new design;

FIG. 2 is a right side view of the heavy truck center grille bar of FIG. 1;

FIG. 3 is a front elevation view of the heavy truck center grille bar of FIG. 1;

FIG. 4 is a left side view of the heavy truck center grille bar of FIG. 1;

FIG. 5 is a top plan view of the heavy truck center grille bar of FIG. 1;

FIG. 6 is a bottom plan view of the heavy truck center grille bar of FIG. 1; and,

FIG. 7 is a cross-sectional view of the heavy truck center grille bar of FIG. 3, taken substantially across line 7-7.

The broken lines shown in the drawings illustrate portions of the heavy truck center grille bar that form no part of the claimed design. 

CLAIM The ornamental design for a heavy truck center grille bar, as shown and described. 